essentially planning for a post 2014 mission and there are a lot of complexities involved in asking the defense department to plan for a zero option that is a full withdral. >> reporter: karzai may leave him no choice. >> i can't ask men and women to serve in a country without the protections afforded by bilateral security agreement. >> reporter: karzai used the security agreement to try to pry concessions out of the u.s. there's a chance, but no guarantees, that presidential elections could elect a new afghan president who may sign the agreement. the white house was planning to leave as many as 10,000 u.s. troops in afghanistan to train and assist afghan forces. instead plans now begin to withdraw all 34,000 american forces from afghanistan. but the biggest challenge will be removing the millions of tons of u.s. military gear all in a tight ten-month time frame. general dempsey warns al qaeda is still alive and active here and worries about leaving that job undone. >> so we need to have an able to have a dread credible, stable, reliable partner in afghanistan against al qaeda for the foreseeab